[INFO] cloning repository https://github.com/rainelegary/busy-beavers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rainelegary/busy-beavers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frainelegary%2Fbusy-beavers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frainelegary%2Fbusy-beavers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 59f8c9e3f5f00cb1b920a449783ae006e56afddf
[INFO] testing rainelegary/busy-beavers against beta-2025-09-21 for beta-1.91-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frainelegary%2Fbusy-beavers" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/rainelegary/busy-beavers
[INFO] finished tweaking git repo https://github.com/rainelegary/busy-beavers
[INFO] tweaked toml for git repo https://github.com/rainelegary/busy-beavers written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rainelegary/busy-beavers on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/rainelegary/busy-beavers already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] testing rainelegary/busy-beavers against beta-2025-09-21 for beta-1.91-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frainelegary%2Fbusy-beavers" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/rainelegary/busy-beavers
[INFO] finished tweaking git repo https://github.com/rainelegary/busy-beavers
[INFO] tweaked toml for git repo https://github.com/rainelegary/busy-beavers written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rainelegary/busy-beavers on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/rainelegary/busy-beavers already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v1.0.87
[INFO] [stderr]   Downloaded syn v2.0.79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fcd91577cce62a7f7441b9bf4f35858586aeef6849df4f3c2c30beb87c61a147
[INFO] running `Command { std: "docker" "start" "-a" "fcd91577cce62a7f7441b9bf4f35858586aeef6849df4f3c2c30beb87c61a147", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fcd91577cce62a7f7441b9bf4f35858586aeef6849df4f3c2c30beb87c61a147", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcd91577cce62a7f7441b9bf4f35858586aeef6849df4f3c2c30beb87c61a147", kill_on_drop: false }`
[INFO] [stdout] fcd91577cce62a7f7441b9bf4f35858586aeef6849df4f3c2c30beb87c61a147
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb40851a74e24f8162c521c11609ca7568b6909ba74fdf76dba28dc6b1b1dd9a
[INFO] running `Command { std: "docker" "start" "-a" "eb40851a74e24f8162c521c11609ca7568b6909ba74fdf76dba28dc6b1b1dd9a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.87
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling rustversion v1.0.17
[INFO] [stderr]    Compiling regex-syntax v0.8.4
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling strum v0.26.3
[INFO] [stderr]    Compiling colored v2.1.0
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.79
[INFO] [stderr]    Compiling regex-automata v0.4.7
[INFO] [stderr]    Compiling strum_macros v0.26.4
[INFO] [stderr]    Compiling regex v1.10.6
[INFO] [stderr]    Compiling busy_beavers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `BeaverType`
[INFO] [stdout]  --> src/main.rs:8:20
[INFO] [stdout]   |
[INFO] [stdout] 8 | use stats::utils::{BeaverType, InfiniteStat, Stat};
[INFO] [stdout]   |                    ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `busy_beavers`
[INFO] [stdout]   --> src/main.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut busy_beavers = BusyBeavers::new();
[INFO] [stdout]    |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_busy_beavers`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut busy_beavers = BusyBeavers::new();
[INFO] [stdout]    |         ----^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `t_fn`, `tape`, `head`, `halted`, `history`, and `states_and_symbols` are never read
[INFO] [stdout]   --> src/turing_machine.rs:9:9
[INFO] [stdout]    |
[INFO] [stdout]  8 | pub struct TuringMachine {
[INFO] [stdout]    |            ------------- fields in this struct
[INFO] [stdout]  9 |     pub t_fn: TFn,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 10 |     pub tape: Tape,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 11 |     pub head: isize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 12 |     pub halted: bool,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 13 |     pub history: Vec<TFnKey>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 14 |     pub states_and_symbols: StatesAndSymbols,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TuringMachine` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]   --> src/turing_machine.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl TuringMachine {
[INFO] [stdout]    | ------------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn run(&mut self, duration: usize) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     fn step(&mut self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |     pub fn get_symbol(&mut self) -> u8 {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     fn set_symbol(&mut self, symbol: u8) { 
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 66 |     fn move_head(&mut self, delta: i8) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |     fn vec_and_index_head(&mut self) -> (&mut Vec<u8>, usize) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 78 |     pub fn vec_and_index(&mut self, loc: &isize) -> (&mut Vec<u8>, usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `delta` is never read
[INFO] [stdout]   --> src/turing_machine.rs:96:9
[INFO] [stdout]    |
[INFO] [stdout] 93 | pub struct TFnValue {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 96 |     pub delta: i8,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TFnValue` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `negative` and `positive` are never read
[INFO] [stdout]    --> src/turing_machine.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub struct Tape {
[INFO] [stdout]     |            ---- fields in this struct
[INFO] [stdout] 101 |     negative: Vec<u8>,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 102 |     positive: Vec<u8>,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Tape` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `len` and `footprint` are never used
[INFO] [stdout]    --> src/turing_machine.rs:113:12
[INFO] [stdout]     |
[INFO] [stdout] 105 | impl Tape {
[INFO] [stdout]     | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 113 |     pub fn len(&self) -> usize {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 118 |     pub fn footprint(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `DISPLAY_WIDTH`, `show_tape_and_state`, `centered_text`, and `strip_ansi_codes` are never used
[INFO] [stdout]   --> src/turing_machine_ui.rs:8:11
[INFO] [stdout]    |
[INFO] [stdout]  7 | impl TuringMachine {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout]  8 |     const DISPLAY_WIDTH: u8 = 101;
[INFO] [stdout]    |           ^^^^^^^^^^^^^
[INFO] [stdout]  9 |
[INFO] [stdout] 10 |     pub fn show_tape_and_state(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     fn centered_text<T: Display>(text: T, focus: Option<u8>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 |     fn strip_ansi_codes(text: &str) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `beavers`, `running`, and `stats` are never read
[INFO] [stdout]   --> src/busy_beavers.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct BusyBeavers {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] 14 |     pub beavers: Vec<TuringMachine>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 15 |     running: HashMap<StatesAndSymbols, FastQueue<usize>>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 16 |     stats: BeaverStats,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `RUN_DURATION`, `MAX_DELTA`, `run`, `update_stats_and_classify`, and `proliferate` are never used
[INFO] [stdout]   --> src/busy_beavers.rs:21:11
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl BusyBeavers {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout] 21 |     const RUN_DURATION: usize = 100;
[INFO] [stdout]    |           ^^^^^^^^^^^^
[INFO] [stdout] 22 |     pub const MAX_DELTA: u8 = 1; 
[INFO] [stdout]    |               ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 35 |     pub fn run(&mut self) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 62 |     fn update_stats_and_classify(&mut self, beaver_id: usize) -> BeaverType {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 88 |     fn proliferate(&mut self, beaver_id: usize) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `pop_index` is never read
[INFO] [stdout]  --> src/fast_queue.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct FastQueue<T> {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 6 |     pop_index: usize,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pop` is never used
[INFO] [stdout]   --> src/fast_queue.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl<T: Clone> FastQueue<T> {
[INFO] [stdout]    | --------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 41 |     pub fn pop(&mut self) -> Option<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `halting` and `infinite` are never read
[INFO] [stdout]   --> src/stats/beaver_stats.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct BeaverStats {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] 17 |     pub types: HashMap<BeaverType, AggregateStat>,
[INFO] [stdout] 18 |     pub halting: HashMap<HaltingStat, CompetitiveStat>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 19 |     pub infinite: HashMap<InfiniteStat, CompetitiveStat>,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `update_halting_stats`, `update_infinite_stats`, and `subtract_undetermined` are never used
[INFO] [stdout]   --> src/stats/beaver_stats.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl BeaverStats {
[INFO] [stdout]    | ---------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 41 |     pub fn update_halting_stats(&mut self, beaver_id: usize, beaver: &mut TuringMachine) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |     pub fn update_infinite_stats(&mut self, beaver_id: usize, beaver: &mut TuringMachine, periodicity: usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 85 |     pub fn subtract_undetermined(&mut self, states_and_symbols: StatesAndSymbols) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `display_tally`, `display_list`, and `display_histogram` are never used
[INFO] [stdout]   --> src/stats/beaver_stats_ui.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl BeaverStats {
[INFO] [stdout]    | ---------------- methods in this implementation
[INFO] [stdout] 11 |     pub fn display_tally(&self, states_and_symbols: StatesAndSymbols) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn display_list(&self, states_and_symbols: StatesAndSymbols, stat: Stat, score: u64) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 |     pub fn display_histogram(&self, stat: Stat, states_and_symbols: StatesAndSymbols) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `MAX_HISTOGRAM_BLOCKS`, `display_histogram`, and `display_leaderboard` are never used
[INFO] [stdout]   --> src/stats/beaver_stats_ui.rs:64:11
[INFO] [stdout]    |
[INFO] [stdout] 63 | impl CompetitiveStat {
[INFO] [stdout]    | -------------------- associated items in this implementation
[INFO] [stdout] 64 |     const MAX_HISTOGRAM_BLOCKS: usize = 100;
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 65 |
[INFO] [stdout] 66 |     pub fn display_histogram(&self, states_and_symbols: StatesAndSymbols) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 79 |     pub fn display_leaderboard(&self, states_and_symbols: StatesAndSymbols) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_tally` is never used
[INFO] [stdout]   --> src/stats/beaver_stats_ui.rs:94:12
[INFO] [stdout]    |
[INFO] [stdout] 93 | impl AggregateStat {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] 94 |     pub fn get_tally(&self, states_and_symbols: StatesAndSymbols) -> u64 {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `histograms` and `leaderboards` are never read
[INFO] [stdout]  --> src/stats/competitive_stat.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct CompetitiveStat {
[INFO] [stdout]   |            --------------- fields in this struct
[INFO] [stdout] 6 |     pub histograms: HashMap<StatesAndSymbols, Vec<Vec<usize>>>,
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout] 7 |     pub leaderboards: HashMap<StatesAndSymbols, Vec<BeaverScore>>,
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `STAT_LIST_LENGTH` and `add` are never used
[INFO] [stdout]   --> src/stats/competitive_stat.rs:11:15
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl CompetitiveStat {
[INFO] [stdout]    | -------------------- associated items in this implementation
[INFO] [stdout] 11 |     pub const STAT_LIST_LENGTH: usize = 16;
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn add(&mut self, states_and_symbols: StatesAndSymbols, beaver_score: BeaverScore) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `subtract` is never used
[INFO] [stdout]   --> src/stats/aggregate_stat.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl AggregateStat {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn subtract(&mut self, states_and_symbols: StatesAndSymbols) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `loop_test` is never used
[INFO] [stdout]  --> src/loop_test.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl BusyBeavers {
[INFO] [stdout]   | ---------------- method in this implementation
[INFO] [stdout] 4 |     pub fn loop_test(&mut self, beaver_id: usize) -> Option<usize> {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.99s
[INFO] running `Command { std: "docker" "inspect" "eb40851a74e24f8162c521c11609ca7568b6909ba74fdf76dba28dc6b1b1dd9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb40851a74e24f8162c521c11609ca7568b6909ba74fdf76dba28dc6b1b1dd9a", kill_on_drop: false }`
[INFO] [stdout] eb40851a74e24f8162c521c11609ca7568b6909ba74fdf76dba28dc6b1b1dd9a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42410a406bd98de5e3e7a13fa5728fc4c012d1f5fb01d4ffebfd467bfd719223
[INFO] running `Command { std: "docker" "start" "-a" "42410a406bd98de5e3e7a13fa5728fc4c012d1f5fb01d4ffebfd467bfd719223", kill_on_drop: false }`
[INFO] [stderr]    Compiling busy_beavers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `BeaverType`
[INFO] [stdout]  --> src/main.rs:8:20
[INFO] [stdout]   |
[INFO] [stdout] 8 | use stats::utils::{BeaverType, InfiniteStat, Stat};
[INFO] [stdout]   |                    ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `busy_beavers`
[INFO] [stdout]   --> src/main.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut busy_beavers = BusyBeavers::new();
[INFO] [stdout]    |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_busy_beavers`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut busy_beavers = BusyBeavers::new();
[INFO] [stdout]    |         ----^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `t_fn`, `tape`, `head`, `halted`, `history`, and `states_and_symbols` are never read
[INFO] [stdout]   --> src/turing_machine.rs:9:9
[INFO] [stdout]    |
[INFO] [stdout]  8 | pub struct TuringMachine {
[INFO] [stdout]    |            ------------- fields in this struct
[INFO] [stdout]  9 |     pub t_fn: TFn,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 10 |     pub tape: Tape,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 11 |     pub head: isize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 12 |     pub halted: bool,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 13 |     pub history: Vec<TFnKey>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 14 |     pub states_and_symbols: StatesAndSymbols,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TuringMachine` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]   --> src/turing_machine.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl TuringMachine {
[INFO] [stdout]    | ------------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn run(&mut self, duration: usize) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     fn step(&mut self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |     pub fn get_symbol(&mut self) -> u8 {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     fn set_symbol(&mut self, symbol: u8) { 
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 66 |     fn move_head(&mut self, delta: i8) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |     fn vec_and_index_head(&mut self) -> (&mut Vec<u8>, usize) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 78 |     pub fn vec_and_index(&mut self, loc: &isize) -> (&mut Vec<u8>, usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `delta` is never read
[INFO] [stdout]   --> src/turing_machine.rs:96:9
[INFO] [stdout]    |
[INFO] [stdout] 93 | pub struct TFnValue {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 96 |     pub delta: i8,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TFnValue` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `negative` and `positive` are never read
[INFO] [stdout]    --> src/turing_machine.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub struct Tape {
[INFO] [stdout]     |            ---- fields in this struct
[INFO] [stdout] 101 |     negative: Vec<u8>,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 102 |     positive: Vec<u8>,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Tape` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `len` and `footprint` are never used
[INFO] [stdout]    --> src/turing_machine.rs:113:12
[INFO] [stdout]     |
[INFO] [stdout] 105 | impl Tape {
[INFO] [stdout]     | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 113 |     pub fn len(&self) -> usize {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 118 |     pub fn footprint(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `DISPLAY_WIDTH`, `show_tape_and_state`, `centered_text`, and `strip_ansi_codes` are never used
[INFO] [stdout]   --> src/turing_machine_ui.rs:8:11
[INFO] [stdout]    |
[INFO] [stdout]  7 | impl TuringMachine {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout]  8 |     const DISPLAY_WIDTH: u8 = 101;
[INFO] [stdout]    |           ^^^^^^^^^^^^^
[INFO] [stdout]  9 |
[INFO] [stdout] 10 |     pub fn show_tape_and_state(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     fn centered_text<T: Display>(text: T, focus: Option<u8>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 |     fn strip_ansi_codes(text: &str) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `beavers`, `running`, and `stats` are never read
[INFO] [stdout]   --> src/busy_beavers.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct BusyBeavers {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] 14 |     pub beavers: Vec<TuringMachine>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 15 |     running: HashMap<StatesAndSymbols, FastQueue<usize>>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 16 |     stats: BeaverStats,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `RUN_DURATION`, `MAX_DELTA`, `run`, `update_stats_and_classify`, and `proliferate` are never used
[INFO] [stdout]   --> src/busy_beavers.rs:21:11
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl BusyBeavers {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout] 21 |     const RUN_DURATION: usize = 100;
[INFO] [stdout]    |           ^^^^^^^^^^^^
[INFO] [stdout] 22 |     pub const MAX_DELTA: u8 = 1; 
[INFO] [stdout]    |               ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 35 |     pub fn run(&mut self) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 62 |     fn update_stats_and_classify(&mut self, beaver_id: usize) -> BeaverType {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 88 |     fn proliferate(&mut self, beaver_id: usize) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `pop_index` is never read
[INFO] [stdout]  --> src/fast_queue.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct FastQueue<T> {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 6 |     pop_index: usize,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pop` is never used
[INFO] [stdout]   --> src/fast_queue.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl<T: Clone> FastQueue<T> {
[INFO] [stdout]    | --------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 41 |     pub fn pop(&mut self) -> Option<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `halting` and `infinite` are never read
[INFO] [stdout]   --> src/stats/beaver_stats.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct BeaverStats {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] 17 |     pub types: HashMap<BeaverType, AggregateStat>,
[INFO] [stdout] 18 |     pub halting: HashMap<HaltingStat, CompetitiveStat>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 19 |     pub infinite: HashMap<InfiniteStat, CompetitiveStat>,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `update_halting_stats`, `update_infinite_stats`, and `subtract_undetermined` are never used
[INFO] [stdout]   --> src/stats/beaver_stats.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl BeaverStats {
[INFO] [stdout]    | ---------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 41 |     pub fn update_halting_stats(&mut self, beaver_id: usize, beaver: &mut TuringMachine) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |     pub fn update_infinite_stats(&mut self, beaver_id: usize, beaver: &mut TuringMachine, periodicity: usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 85 |     pub fn subtract_undetermined(&mut self, states_and_symbols: StatesAndSymbols) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `display_tally`, `display_list`, and `display_histogram` are never used
[INFO] [stdout]   --> src/stats/beaver_stats_ui.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl BeaverStats {
[INFO] [stdout]    | ---------------- methods in this implementation
[INFO] [stdout] 11 |     pub fn display_tally(&self, states_and_symbols: StatesAndSymbols) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn display_list(&self, states_and_symbols: StatesAndSymbols, stat: Stat, score: u64) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 |     pub fn display_histogram(&self, stat: Stat, states_and_symbols: StatesAndSymbols) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `MAX_HISTOGRAM_BLOCKS`, `display_histogram`, and `display_leaderboard` are never used
[INFO] [stdout]   --> src/stats/beaver_stats_ui.rs:64:11
[INFO] [stdout]    |
[INFO] [stdout] 63 | impl CompetitiveStat {
[INFO] [stdout]    | -------------------- associated items in this implementation
[INFO] [stdout] 64 |     const MAX_HISTOGRAM_BLOCKS: usize = 100;
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 65 |
[INFO] [stdout] 66 |     pub fn display_histogram(&self, states_and_symbols: StatesAndSymbols) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 79 |     pub fn display_leaderboard(&self, states_and_symbols: StatesAndSymbols) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_tally` is never used
[INFO] [stdout]   --> src/stats/beaver_stats_ui.rs:94:12
[INFO] [stdout]    |
[INFO] [stdout] 93 | impl AggregateStat {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] 94 |     pub fn get_tally(&self, states_and_symbols: StatesAndSymbols) -> u64 {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `histograms` and `leaderboards` are never read
[INFO] [stdout]  --> src/stats/competitive_stat.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct CompetitiveStat {
[INFO] [stdout]   |            --------------- fields in this struct
[INFO] [stdout] 6 |     pub histograms: HashMap<StatesAndSymbols, Vec<Vec<usize>>>,
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout] 7 |     pub leaderboards: HashMap<StatesAndSymbols, Vec<BeaverScore>>,
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `STAT_LIST_LENGTH` and `add` are never used
[INFO] [stdout]   --> src/stats/competitive_stat.rs:11:15
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl CompetitiveStat {
[INFO] [stdout]    | -------------------- associated items in this implementation
[INFO] [stdout] 11 |     pub const STAT_LIST_LENGTH: usize = 16;
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn add(&mut self, states_and_symbols: StatesAndSymbols, beaver_score: BeaverScore) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `subtract` is never used
[INFO] [stdout]   --> src/stats/aggregate_stat.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl AggregateStat {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn subtract(&mut self, states_and_symbols: StatesAndSymbols) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `loop_test` is never used
[INFO] [stdout]  --> src/loop_test.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl BusyBeavers {
[INFO] [stdout]   | ---------------- method in this implementation
[INFO] [stdout] 4 |     pub fn loop_test(&mut self, beaver_id: usize) -> Option<usize> {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "42410a406bd98de5e3e7a13fa5728fc4c012d1f5fb01d4ffebfd467bfd719223", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42410a406bd98de5e3e7a13fa5728fc4c012d1f5fb01d4ffebfd467bfd719223", kill_on_drop: false }`
[INFO] [stdout] 42410a406bd98de5e3e7a13fa5728fc4c012d1f5fb01d4ffebfd467bfd719223
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 887d0243c3809c1fcd6972e77d49464d1a4fe1e93dae9e4e79cf97b2dcf6eea8
[INFO] running `Command { std: "docker" "start" "-a" "887d0243c3809c1fcd6972e77d49464d1a4fe1e93dae9e4e79cf97b2dcf6eea8", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `BeaverType`
[INFO] [stderr]  --> src/main.rs:8:20
[INFO] [stderr]   |
[INFO] [stderr] 8 | use stats::utils::{BeaverType, InfiniteStat, Stat};
[INFO] [stderr]   |                    ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `busy_beavers`
[INFO] [stderr]   --> src/main.rs:21:13
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let mut busy_beavers = BusyBeavers::new();
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_busy_beavers`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let mut busy_beavers = BusyBeavers::new();
[INFO] [stderr]    |         ----^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `t_fn`, `tape`, `head`, `halted`, `history`, and `states_and_symbols` are never read
[INFO] [stderr]   --> src/turing_machine.rs:9:9
[INFO] [stderr]    |
[INFO] [stderr]  8 | pub struct TuringMachine {
[INFO] [stderr]    |            ------------- fields in this struct
[INFO] [stderr]  9 |     pub t_fn: TFn,
[INFO] [stderr]    |         ^^^^
[INFO] [stderr] 10 |     pub tape: Tape,
[INFO] [stderr]    |         ^^^^
[INFO] [stderr] 11 |     pub head: isize,
[INFO] [stderr]    |         ^^^^
[INFO] [stderr] 12 |     pub halted: bool,
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr] 13 |     pub history: Vec<TFnKey>,
[INFO] [stderr]    |         ^^^^^^^
[INFO] [stderr] 14 |     pub states_and_symbols: StatesAndSymbols,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `TuringMachine` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: multiple methods are never used
[INFO] [stderr]   --> src/turing_machine.rs:32:12
[INFO] [stderr]    |
[INFO] [stderr] 17 | impl TuringMachine {
[INFO] [stderr]    | ------------------ methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 32 |     pub fn run(&mut self, duration: usize) {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 42 |     fn step(&mut self) {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 56 |     pub fn get_symbol(&mut self) -> u8 {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 61 |     fn set_symbol(&mut self, symbol: u8) { 
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 66 |     fn move_head(&mut self, delta: i8) {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 74 |     fn vec_and_index_head(&mut self) -> (&mut Vec<u8>, usize) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 78 |     pub fn vec_and_index(&mut self, loc: &isize) -> (&mut Vec<u8>, usize) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `delta` is never read
[INFO] [stderr]   --> src/turing_machine.rs:96:9
[INFO] [stderr]    |
[INFO] [stderr] 93 | pub struct TFnValue {
[INFO] [stderr]    |            -------- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 96 |     pub delta: i8,
[INFO] [stderr]    |         ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `TFnValue` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: fields `negative` and `positive` are never read
[INFO] [stderr]    --> src/turing_machine.rs:101:5
[INFO] [stderr]     |
[INFO] [stderr] 100 | pub struct Tape {
[INFO] [stderr]     |            ---- fields in this struct
[INFO] [stderr] 101 |     negative: Vec<u8>,
[INFO] [stderr]     |     ^^^^^^^^
[INFO] [stderr] 102 |     positive: Vec<u8>,
[INFO] [stderr]     |     ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `Tape` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: methods `len` and `footprint` are never used
[INFO] [stderr]    --> src/turing_machine.rs:113:12
[INFO] [stderr]     |
[INFO] [stderr] 105 | impl Tape {
[INFO] [stderr]     | --------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 113 |     pub fn len(&self) -> usize {
[INFO] [stderr]     |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 118 |     pub fn footprint(&self) -> usize {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `DISPLAY_WIDTH`, `show_tape_and_state`, `centered_text`, and `strip_ansi_codes` are never used
[INFO] [stderr]   --> src/turing_machine_ui.rs:8:11
[INFO] [stderr]    |
[INFO] [stderr]  7 | impl TuringMachine {
[INFO] [stderr]    | ------------------ associated items in this implementation
[INFO] [stderr]  8 |     const DISPLAY_WIDTH: u8 = 101;
[INFO] [stderr]    |           ^^^^^^^^^^^^^
[INFO] [stderr]  9 |
[INFO] [stderr] 10 |     pub fn show_tape_and_state(&mut self) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 36 |     fn centered_text<T: Display>(text: T, focus: Option<u8>) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 50 |     fn strip_ansi_codes(text: &str) -> String {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `beavers`, `running`, and `stats` are never read
[INFO] [stderr]   --> src/busy_beavers.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub struct BusyBeavers {
[INFO] [stderr]    |            ----------- fields in this struct
[INFO] [stderr] 14 |     pub beavers: Vec<TuringMachine>,
[INFO] [stderr]    |         ^^^^^^^
[INFO] [stderr] 15 |     running: HashMap<StatesAndSymbols, FastQueue<usize>>,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 16 |     stats: BeaverStats,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `RUN_DURATION`, `MAX_DELTA`, `run`, `update_stats_and_classify`, and `proliferate` are never used
[INFO] [stderr]   --> src/busy_beavers.rs:21:11
[INFO] [stderr]    |
[INFO] [stderr] 20 | impl BusyBeavers {
[INFO] [stderr]    | ---------------- associated items in this implementation
[INFO] [stderr] 21 |     const RUN_DURATION: usize = 100;
[INFO] [stderr]    |           ^^^^^^^^^^^^
[INFO] [stderr] 22 |     pub const MAX_DELTA: u8 = 1; 
[INFO] [stderr]    |               ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 35 |     pub fn run(&mut self) {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 62 |     fn update_stats_and_classify(&mut self, beaver_id: usize) -> BeaverType {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 88 |     fn proliferate(&mut self, beaver_id: usize) {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `pop_index` is never read
[INFO] [stderr]  --> src/fast_queue.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct FastQueue<T> {
[INFO] [stderr]   |            --------- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 6 |     pop_index: usize,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `pop` is never used
[INFO] [stderr]   --> src/fast_queue.rs:41:12
[INFO] [stderr]    |
[INFO] [stderr]  9 | impl<T: Clone> FastQueue<T> {
[INFO] [stderr]    | --------------------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 41 |     pub fn pop(&mut self) -> Option<T> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `halting` and `infinite` are never read
[INFO] [stderr]   --> src/stats/beaver_stats.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub struct BeaverStats {
[INFO] [stderr]    |            ----------- fields in this struct
[INFO] [stderr] 17 |     pub types: HashMap<BeaverType, AggregateStat>,
[INFO] [stderr] 18 |     pub halting: HashMap<HaltingStat, CompetitiveStat>,
[INFO] [stderr]    |         ^^^^^^^
[INFO] [stderr] 19 |     pub infinite: HashMap<InfiniteStat, CompetitiveStat>,
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `update_halting_stats`, `update_infinite_stats`, and `subtract_undetermined` are never used
[INFO] [stderr]   --> src/stats/beaver_stats.rs:41:12
[INFO] [stderr]    |
[INFO] [stderr] 22 | impl BeaverStats {
[INFO] [stderr]    | ---------------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 41 |     pub fn update_halting_stats(&mut self, beaver_id: usize, beaver: &mut TuringMachine) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 54 |     pub fn update_infinite_stats(&mut self, beaver_id: usize, beaver: &mut TuringMachine, periodicity: usize) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 85 |     pub fn subtract_undetermined(&mut self, states_and_symbols: StatesAndSymbols) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `display_tally`, `display_list`, and `display_histogram` are never used
[INFO] [stderr]   --> src/stats/beaver_stats_ui.rs:11:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | impl BeaverStats {
[INFO] [stderr]    | ---------------- methods in this implementation
[INFO] [stderr] 11 |     pub fn display_tally(&self, states_and_symbols: StatesAndSymbols) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 20 |     pub fn display_list(&self, states_and_symbols: StatesAndSymbols, stat: Stat, score: u64) {
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 55 |     pub fn display_histogram(&self, stat: Stat, states_and_symbols: StatesAndSymbols) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `MAX_HISTOGRAM_BLOCKS`, `display_histogram`, and `display_leaderboard` are never used
[INFO] [stderr]   --> src/stats/beaver_stats_ui.rs:64:11
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 63 | impl CompetitiveStat {
[INFO] [stdout] running 0 tests
[INFO] [stderr]    | -------------------- associated items in this implementation
[INFO] [stdout] 
[INFO] [stderr] 64 |     const MAX_HISTOGRAM_BLOCKS: usize = 100;
[INFO] [stderr]    |           ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 65 |
[INFO] [stderr] 66 |     pub fn display_histogram(&self, states_and_symbols: StatesAndSymbols) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 79 |     pub fn display_leaderboard(&self, states_and_symbols: StatesAndSymbols) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `get_tally` is never used
[INFO] [stderr]   --> src/stats/beaver_stats_ui.rs:94:12
[INFO] [stderr]    |
[INFO] [stderr] 93 | impl AggregateStat {
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    | ------------------ method in this implementation
[INFO] [stdout] 
[INFO] [stderr] 94 |     pub fn get_tally(&self, states_and_symbols: StatesAndSymbols) -> u64 {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `histograms` and `leaderboards` are never read
[INFO] [stderr]  --> src/stats/competitive_stat.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct CompetitiveStat {
[INFO] [stderr]   |            --------------- fields in this struct
[INFO] [stderr] 6 |     pub histograms: HashMap<StatesAndSymbols, Vec<Vec<usize>>>,
[INFO] [stderr]   |         ^^^^^^^^^^
[INFO] [stderr] 7 |     pub leaderboards: HashMap<StatesAndSymbols, Vec<BeaverScore>>,
[INFO] [stderr]   |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `STAT_LIST_LENGTH` and `add` are never used
[INFO] [stderr]   --> src/stats/competitive_stat.rs:11:15
[INFO] [stderr]    |
[INFO] [stderr] 10 | impl CompetitiveStat {
[INFO] [stderr]    | -------------------- associated items in this implementation
[INFO] [stderr] 11 |     pub const STAT_LIST_LENGTH: usize = 16;
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 20 |     pub fn add(&mut self, states_and_symbols: StatesAndSymbols, beaver_score: BeaverScore) {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `subtract` is never used
[INFO] [stderr]   --> src/stats/aggregate_stat.rs:20:12
[INFO] [stderr]    |
[INFO] [stderr]  9 | impl AggregateStat {
[INFO] [stderr]    | ------------------ method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 20 |     pub fn subtract(&mut self, states_and_symbols: StatesAndSymbols) {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `loop_test` is never used
[INFO] [stderr]  --> src/loop_test.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | impl BusyBeavers {
[INFO] [stderr]   | ---------------- method in this implementation
[INFO] [stderr] 4 |     pub fn loop_test(&mut self, beaver_id: usize) -> Option<usize> {
[INFO] [stderr]   |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `busy_beavers` (bin "busy_beavers" test) generated 22 warnings (run `cargo fix --bin "busy_beavers" --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/busy_beavers-c1684a12fb354da1)
[INFO] running `Command { std: "docker" "inspect" "887d0243c3809c1fcd6972e77d49464d1a4fe1e93dae9e4e79cf97b2dcf6eea8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "887d0243c3809c1fcd6972e77d49464d1a4fe1e93dae9e4e79cf97b2dcf6eea8", kill_on_drop: false }`
[INFO] [stdout] 887d0243c3809c1fcd6972e77d49464d1a4fe1e93dae9e4e79cf97b2dcf6eea8
